Physical Sciences and Mathematics Commons^™

Causes And Consequences Of Soil Carbon Mobilization And Lake Brownification In Northern Forested Landscapes, Óscar Esbrí Senar

Electronic Thesis and Dissertation Repository

Global changes are fundamentally changing terrestrial and aquatic ecosystems. Some of the highest rates of global change are in the north, where they are leading to the faster destabilization of forest soil carbon and its mobilization as dissolved organic matter and causing the brownification of lakes. This thesis investigated the causes of soil carbon destabilization and consequences of the mobilized soil carbon to lake food webs. The first finding was that global change increased carbon export from catchments. Increased temperatures and changes in hydrologic connectivity interacted with catchment topography to modulate the timing, magnitude, and fate of soil carbon export. …